altimeter Hear it!

altimeter definition

al·tim·eter (al tim′ət ər; also al′tə mēt′ər)

noun

an instrument for measuring height above a given reference level, as the sea or ground: in aircraft it is either an aneroid barometer with a dial marked in feet or meters or an instrument using radar

Etymology: alti- + -meter

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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